Yes, but if you are on 10g you could use flashback database to recover from a failover without having to rebuild your primary. At least, if your db files are still intact. Regards, Freek D'Hooge Uptime Oracle Database Administrator email: freek.dhooge@xxxxxxxxx tel +32(0)3 451 23 82 http://www.uptime.be ________________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Niall Litchfield Sent: dinsdag 3 februari 2009 13:32 To: howard.latham@xxxxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Standby on Same box well for protection against loss of the original box, it's obviously not a great plan! It might provide some protection against logical corruption (the mythical 'junior dba' for example) if configured with a delay. As far as switchover/switchback goes - that operation doesn't involve a rebuild - though failover does. Niall Litchfield -- //www.freelists.org/webpage/oracle-l